The 6th term of a GP is 2000. Find its first term if it's common ratio is 10

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11

Complete the equation of the live through (-1,6) (7,-2)